I just installed eCS onto a computer and unfortunately chose a screen resolution that themonitor that I want to use permanently with eCS does not support. Now, when booting, the screen goes black.

Is there a way to change the screen resolution at boot-time ? My PC has a pecularity: eCScould only be installed with a PS2 keyboard plugged in. At home, I only have USB keyboards -so I cannot use the installation DVD for a possible fix.